删除/更新数据库/修复数据库都没效果

[root@HP-ThinPC tmp]# wget -O sql-repair.sh http://download.bt.cn/install/sql-repair.sh && sh sql-repair.sh
--2018-11-05 10:12:54--  http://download.bt.cn/install/sql-repair.sh
正在解析主机 download.bt.cn... 58.222.18.29
正在连接 download.bt.cn|58.222.18.29|:80... 已连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：19399 (19K) [application/x-sh]
正在保存至: “sql-repair.sh”

100%[==============================================================================================>] 19,399      --.-K/s   in 0.01s   

2018-11-05 10:12:54 (1.79 MB/s) - 已保存 “sql-repair.sh” [19399/19399])

ERROR! MySQL server PID file could not be found!
Starting MySQL.. ERROR! The server quit without updating PID file (/www/server/data/HP-ThinPC.pid).
==========================================================================================
181105  9:54:34 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:01:12 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:01:17 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:01:21 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:01:23 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:01:42 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:07:18 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:12:30 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
181105 10:12:56 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
==========================================================================================
mysql start error.
mysql无法正常启动，请将以上错误信息截图发至论坛寻求帮助